Guide to Cricket Farming and Live Food Cost Reduction | DIY Breeding for Reptiles, Amphibians, and Insectivorous Birds

Benefits of Starting Your Own Live Food Breeding

If you keep reptiles (leopard geckos, chameleons, bearded dragons, etc.), amphibians (frogs, salamanders), or insectivorous birds (hornbills, shamas, certain parrot species), the cost of buying live food is far greater than expected. Purchasing 100 two-spotted crickets from a pet shop costs several hundred to 1,000 yen, and repeating this weekly adds up to tens of thousands of yen per year.

Breeding crickets yourself can drastically reduce running costs. Initial equipment costs around 3,000–10,000 yen, but once established, monthly feed costs (poultry pellets and vegetable scraps) can be under a few hundred yen, paying for itself in 1–2 months. You also always have fresh live food on hand, eliminating the hassle of regular purchases and stockouts.

Cricket Species and Selection

The two main cricket species suitable for home breeding are two-spotted crickets (Gryllus bimaculatus) and European house crickets (Acheta domesticus).

Two-spotted crickets are larger and more nutritious (higher protein and fat content), making them ideal for larger reptiles and birds. However, as tropical species, they're sensitive to cold (below 20°C) and require 25–30°C for breeding. They also tend toward cannibalism and have a stronger odor.

European house crickets are smaller and can breed in moderate temperatures of 20–25°C. They have a milder odor and less sticky carcasses, making them easier to manage. Their size is ideal for leopard geckos, small frogs, and young insectivorous birds.

Your choice depends on the size and preferences of your animals and your management environment. Many breeders maintain both species and use them at different growth stages.

Breeding Setup and Equipment

Cricket breeding requires the following basic equipment:

• Container: A plastic storage box (~60L) or large enclosure. Install mesh on the lid or leave it partially open for ventilation.
• Laying substrate: Place a container filled with moist coconut husk or vermiculite (~5cm deep) inside the box. Females insert their ovipositors here to lay eggs.
• Shelters: Stack egg trays (paper) or cardboard to create three-dimensional space for movement, reducing cannibalism.
• Water: Use a container with a water-soaked sponge or cotton to prevent drowning. Insect jelly is also effective for hydration.
• Heating: For two-spotted crickets, maintain 25–30°C using a reptile heat panel or under-tank heater. European house crickets can be managed at room temperature (20–25°C).

Egg-Laying, Hatching, and Nymph Management Cycle

Understanding the breeding cycle enables consistent supply.

Egg-laying occurs when females access the laying substrate for several days. A single female lays hundreds of eggs in her lifetime. Collect substrate every 1–2 weeks and transfer to a separate container for incubation.

Hatching depends on temperature. At 28–30°C, eggs hatch in 10–14 days; at 25°C, 2–3 weeks. First-instar nymphs (pinheads) are tiny and require a separate container with fine ventilation.

Nymph growth proceeds through repeated molting. Two-spotted crickets take approximately 4–6 weeks from egg to adult at 25–28°C. To reduce colony collapse risk, stagger management across multiple containers (rotation).

Boost Nutrition with Gut-Loading and Dusting

Your animal's health depends on the nutrition of its live food. Properly gut-loading crickets before feeding them is crucial.

Gut-loading involves feeding crickets carotene-rich vegetables like Japanese mustard greens, bok choy, carrots, and squash, plus wheat bran or poultry pellets. Ideally, use them 12–24 hours after feeding. Feeding only water-rich foods like cucumber or lettuce is insufficient and not recommended.

Dusting means coating crickets with reptile calcium powder (with vitamin D3) before feeding. Calcium deficiency causes metabolic bone disease, so dust every feeding or at least 2–3 times weekly. Alternate vitamin supplements 1–2 times per week for balanced nutrition.

Cost Breakdown and Precautions

Here's a rough estimate of running costs:

• Poultry pellets (1kg): ~300–500 yen (2–3 months' supply)
• Calcium powder: ~500–800 yen (3–4 months)
• Electricity (heat panel): ~300–600 yen/month

Monthly running costs typically stay under 1,000–2,000 yen, far cheaper than weekly pet shop purchases.

Important: watch for escapes. Adults are strong jumpers and escape through gaps, spreading throughout your home. Check container seals regularly. Also, to prevent colony collapse, supplement new adults regularly or maintain across generations, accounting for the 2–3 month adult lifespan.

On BreederDirect, experienced breeders offer multiple cricket sizes—from nymphs (pinhead to small) to adults—making them ideal starter stock for your own breeding program.